Form SS-4 Troubleshooting: Common Errors Timeouts and Duplicate EINs
EIN application flow (Form SS-4)
How a foreign-owned entity obtains its IRS Employer Identification Number.
Gather entity details
Legal name, responsible party, and structure.
Complete Form SS-4
Foreign responsible parties can generally apply without a U.S. TIN when the IRS foreign-applicant process applies.
Submit to the IRS
Fax or mail — international applicants can also call.
Receive the EIN
Use it to open banking and file federal returns.
Key Takeaways
- Session timeouts are common on the IRS online application — try a different browser if it happens
- Name/SSN mismatches are the most common cause of online application rejections
- Never submit Form SS-4 using more than one method to avoid duplicate EINs
- If a fax submission produces no response in 4-5 days, call 267-941-1099 to check status
- The phone method (267-941-1099) is a reliable fallback when the online system has issues
- Duplicate EINs require IRS intervention to cancel the extra number
What should you do if the online application times out?
The IRS online EIN application has session timeout issues that are well documented. If your session times out or the page freezes, do not panic. Close the browser completely and try again. Some applicants find that switching to a different browser (Chrome, Firefox, Safari, or Edge) resolves the issue.
Do not attempt to submit the application again if you are unsure whether the first attempt went through. Check your records for a confirmation page or email. If you accidentally receive two EINs, you will need to contact the IRS to resolve the duplicate.
What causes name or SSN mismatches?
The online application validates the responsible party's name and SSN/ITIN against IRS records. If there is a mismatch, the application will stop. Common causes include:
Using a nickname instead of the legal name on your Social Security card. A recent name change that has not yet been updated with the Social Security Administration. Entering the SSN with incorrect formatting or transposed digits.
Make sure the name and SSN you enter match your Social Security card exactly. If you recently changed your name, update it with the SSA first, then apply for the EIN.
What if you submitted by fax and never received an EIN?
If you submitted Form SS-4 by fax and have not received a response within 4-5 business days, there may have been a transmission issue. Call the IRS at 267-941-1099 to check the status.
Make sure the fax number you provided for the return transmission is correct and operational. The IRS will fax the EIN to the number listed on your Form SS-4, so verify that number before submitting.
How do you deal with duplicate EINs?
Duplicate EINs usually happen when applicants use multiple submission methods for the same entity (for example, applying online and also by fax). Each valid submission generates a separate EIN.
To resolve this, call the IRS at 267-941-1099 and explain the situation. The agent can research both EINs, cancel the duplicate, and ensure only one active EIN exists for your entity. Use only the EIN the IRS confirms as active on all future filings.
Are there known IRS system issues with the online application?
Yes. The Taxpayer Advocate Service has documented recurring issues with the IRS online EIN application. These include website crashes during peak hours, error codes that are not clearly explained, and sessions that expire with no warning.
If you encounter persistent problems with the online system, consider using the phone method instead (267-941-1099). While it may take longer to get through, you will speak with a live agent who can issue the EIN during the call.
Frequently Asked Questions
The online application gave me an error and I do not know if my EIN was assigned. What should I do?
Do not resubmit immediately. Call the IRS at 267-941-1099 to check whether an EIN was assigned. Resubmitting could create a duplicate EIN that will need to be resolved later.
My name does not match IRS records. How do I fix this?
Contact the Social Security Administration to verify your name on file. If you recently changed your name, update it with the SSA first. The name on your EIN application must match your Social Security card exactly.
I received two EINs for the same LLC. Which one do I use?
Call the IRS at 267-941-1099 to have them identify which EIN is the active one and cancel the duplicate. Use only the confirmed active EIN on all future filings.
Listen on Spotify
Money & Tax Talk with Rippa — 5/5 rating
Need Help Filing?
Contact us with your situation and we'll point you to the right path
Never miss an IRS deadline
Get free email reminders for Form 5472, state annual reports, quarterly estimated tax, and OBBBA rule changes — built for foreign-owned LLC owners. No spam. Unsubscribe anytime.
We respect your privacy. No spam, ever.
Need an EIN for your foreign-owned business? (Form SS-4)
Skip the back-and-forth. Our guided wizard builds your IRS-ready application package, step by step.
Step-by-step guided application package
Start application →
Ask the AI tools, free
Tax Return Drafter, Catch-Up Planner, Form Reviewer, IRS Notice Decoder — purpose-built AI tools, no signup needed.
Free tier · BYOK Anthropic/OpenAI for power use
Browse tools →
Starting your foreign-owned LLC?
Vetted partners we use ourselves: doola & Firstbase for formation, Mercury for banking, Alohi for IRS faxing.
No-fluff recommendations, no Northwest
See partners →
More on Form SS-4 & EIN Application
What Is an EIN and Why Do You Need Form SS-4?
What Is an EIN? Why You Need Form SS-4 to Get Your Tax ID Number
Who Can Apply for an EIN? US vs Foreign Applicants
Who Can Apply for an EIN? US vs Foreign Applicants Explained
Preparing to File Form SS-4 — Sequencing, Addresses & Entity Classification
Preparing to File Form SS-4: Sequencing Addresses and Entity Classification
Form SS-4 Line-by-Line: Legal Name, Address & Responsible Party (Lines 1–7)
Form SS-4 Line-by-Line: Legal Name Address and Responsible Party Lines 1-7
Form SS-4 Line-by-Line: LLC Info, Entity Type & Reason (Lines 8–12)
Form SS-4 Line-by-Line: LLC Info Entity Type and Reason Lines 8-12
Form SS-4 Line-by-Line: Employees, Activity & Signature (Lines 13–18)